Improvement in riddles for thrashing-machines



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1D. MURPHY. Thrashin g Mahine. No. 111,766. Ry-Z Patented Feb. 14, 1871.

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D. MURPHY;

Thrashing Machine No. 111,766. Patented Feb. 14, 1871.

N PEIERS. PHOTO-1 mm RAPMER, WASmNGIoN. n C.

timid fiat-i125- ing motion.

DANIEL-MURPHY, OF. DUBUQUE, IOWA, 'ASSIGNOR TO HIMSELF AND 33mm I dffid.

TIMOTHY O. MURPHY, OF SAME PLACE.

Letters Patent No. 111,766, dated February 14, 1871.

IMPROVEMENT m RIDDLES FOR THRASHIING-MACHINES.

The Schedule referred to in these Letters Patent and making part of thecan To all whom it may concern-.-

Be it known that I, DANIEL MURPHY, oflDnbnque, in the county of Dnbuqueand State of Iowa, have invented a new and Improved Clearer for theRiddles of Thrashing-lVIachines; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing bad to the accompanying drawing making partof "this specification,in which- Figure 1, plate 1, is a perspective view of athrashing-machine frame and riddle having my invention applied to it.

Figure 2, plate 1, is an elevation of one end of the same.

Figure 3, plate 2, is a top view of the same.

Figure 4, plate 2, is'a longitudinal section taken :vertieally andcentrally through the same.

Similar letters of reference indicate corresponding parts in the severalfigures.

The object of this invention is to keep the riddles 'of thrashingmachines clear by preventing the lodgment thereon of straws, unthrash'edheads of grain, sticks, and other foreign substances; also, to stir upwet grain or chad which may fall on the riddles.

My invention consists in the combination of lat erally reciprocatingclearing fingers with a laterally movable riddle-shoe; also incommunicating the lateral motions to" the riddle-shoe and clearers bymeans which are actuateal by a single driving-shaft, as will hehereinafter explained.

The following description will enable others skilled in'the art tounderstand my invention.

In the accompanying drawing A Arepresent the sides of a frame of athrashingmachine, and

B represents a riddle-shoe, which is. suspended within said frame bymeans of spring-straps S S, two

' on each side.

The riddle-shoe B being of less width than the frame of the machine, andhung by means of springst-raps, this shoeis allowed to receivea lateralshak- The screen a in the shoe empties its trash into alaterally-inclined spout, I), while the grain which passes through theriddle escapes backward, and is received into a suitable receptacle'inthe usual wellknown manner.

At'a suitable point on the bottom of the riddleshoe, ears 9 are secured,to which two pitmen-rods G L, are pivoted eccentrically to the face of awheel, J,

which is keyed on one end of a longitudinal drivingshaft, D, which hasitsbearings in boxes 0 e.

The other rod, G, is pivoted to oncend of a lever','E,

which has its fulcrum on a bracket, 1*, and which is pivoted at its rearend to a jointed section, 0', of a horizontal rod, 0.

The rod 0 extends transversely across thethrashing-machine frame, andhas" its bearings in the sides thereof.

This rod 0 receives an endwise motion from the lever E, which leverreceives a vibrating motion from erably made of square rods, althoughthey may be made of round or flat rods.

The rod 0 is arranged in such relation to the inclinedplane of theriddle a, that the fingers 0 lie over this riddle in close proximity toit.

From the above description, it will be seen that when the shaft D isrotated, the riddle-shoe and the clearing-fingers will receive.alternate laterally-reciprocating movements, and that the fingers 0 willstir up and keep in motion any foreign substances which may fall on theriddle, thereby preventing such substances from attaching themselves tothe meshes of the riddle and clogging the same.

It will alsobe seen that the riddle-shoe, and also thevclearing-fingers, receive their motion from a single driving-shalt;also, that these devices are applicable to almost all of the well-knownthlashing-machines.

Having described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination of the rods G L, shoe B, crank J, and lever E, whensaid parts are arranged the operation in the manner and for the purposeshown and described. 1

2. The laterally-sliding fingersfc c, jointed rod 0 O, shaft D, lever E,rods G L, crank J, and riddle-shoe B, all constructed and arranged foroperation substantially as described.

DANIEL MURPHY.

Witnesses:

J onn DEERY, TIMOTHY O. Mrmrnr.

